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Razor IMU - 9 Degrees of Freedom - Has anyone used it?

Hello People

I wonder if anyone has any experiance with the Razor IMU with 9 Degrees of Freedom from sparkfun. Is is value for money?

I have found one here http://proto-pic.co.uk/9-degrees-of-freedom-razor-imu-ahrs-compatible/ at what seems a very reasonable price as far as UK prices are concerned (£72 + 6 shipping). Some places are mad expensive, up to almost £120...